<template>
  <view class="cart-container" v-if="cart.length !==0">
    <!-- 收货地址组件 -->
    <my-address></my-address>
    <!-- 商品列表的标题区域 -->
    <view class="cart-title">
      <!-- 左侧的图标 -->
      <uni-icons type="shop" size="17"></uni-icons>
      <!-- 右侧的文本 -->
      <text class='cart-title-text'>购物车</text>
    </view>
    
    <!-- 循环渲染购物车中的商品信息 -->
      <block v-for="(goods,i) in cart" :key='i'>
        <uni-swipe-action-item :right-options="options" @click="swipeItemClickHandler(goods)">
          <my-goods :goods="goods" :show-num='true' :show-radio='true' @radio-change="redioChangeHandler" @num-change="numberChangeHandler"></my-goods>
        </uni-swipe-action-item>
      </block>
    </uni-swipe-action>
    
    <!-- 结算自定义的结算组件 -->
    <my-settle></my-settle>
  </view>
  
  <!-- 空白购物车的区域 -->
  <view class="empty-cart" v-else>
    <image src="/static/gwc.png" class='empty-img'></image>
    <text class='tip-text'>空空如也~</text>
  </view>
</template>

<script>
  import badgeMix from "@/mixins/tabbar-badge.js"
  import {mapState,mapMutations} from 'vuex'
  export default {
    mixins:[badgeMix],
    computed:{
      ...mapState('m_cart',['cart'])
    },
    data(){
      return{
        options:[{
          text:'删除',
          style:{
            backgroundColor:'#C00000'
          }
        }]
      };
    },
    methods:{
      ...mapMutations('m_cart',['updateGoodsState',"updateGoodsCount","removeGoodsById"]),
      redioChangeHandler(e){
        this.updateGoodsState(e)
      },
      numberChangeHandler(e){
        this.updateGoodsCount(e)
      },
      swipeItemClickHandler(goods){
        this.removeGoodsById(goods.goods_id);
      }
    }

  }
</script>

<style lang="scss">
  .cart-container{
    padding-bottom: 50px;
  }
  .cart-title{
    height:40px;
    display: flex;
    align-items: center;
    padding-left: 5px;
    border-bottom: 1px solid #EFEFEF;
    
    .cart-title-text{
      font-size:14px;
      margin-left:10px;
      
    }
  }
  .empty-cart{
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top:150px;
    .empty-img{
      width:140px;
      height:140px;
    }
    .tip-text{
      font-size:12px;
      color:gray;
      margin-top:15px
    }
  }
</style>
